Non-Barnard Reading Series:

The Americas Society's Literature Department offers free readings, panel discussions and other events which they announce on their facebook page.

Book Culture, in the campus neighborhood, has several types of events, both in their store and elsewhere. Visit their home page and click on "Events" in their menu.

The Center for Fiction, founded in 1820 as the Mercantile Library, has readings, panels among a variety of other offerings: http://www.centerforfiction.org/events/. Explore the rest of their site for many other resources for both readers and writers.